[PATCH] tpm: access command header through struct in tpm_try_transmit()
From: Jarkko Sakkinen <hidden>
Date: 2018-11-03 00:34:31
Also in:
linux-security-module, lkml
Subsystem:
the rest, tpm device driver · Maintainers:
Linus Torvalds, Peter Huewe, Jarkko Sakkinen
Instead of accessing fields of the command header through offsets to the raw buffer, it is a better idea to use the header struct pointer that is already used elsewhere in the function. Signed-off-by: Jarkko Sakkinen <redacted> --- drivers/char/tpm/tpm-interface.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 967de254b156..dd97a17243e3 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c@@ -190,8 +190,8 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, if (bufsiz > TPM_BUFSIZE) bufsiz = TPM_BUFSIZE; - count = be32_to_cpu(*((__be32 *) (buf + 2))); - ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); + count = be32_to_cpu(header->length); + ordinal = be32_to_cpu(header->return_code); if (count == 0) return -ENODATA; if (count > bufsiz) {
--
2.19.1